srclist overlap message for exposure 1 of trigger 1162001
uvot_overlap.pl vrs. 2010-12-20b fem started at 230328d19h03m06s730387usUT
The observation of trigger 1162001 started 2023-03-28T14:57:13.6
Examining file ./1162001_g144_uvot_sky_srclist.fits
The exposure ID is 701708233
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (291.0220,80.0169) with a roll angle of 103.1
It is square with sides of 8.03 arc min. for an area of 64.51 sq arc min
The BAT error circle is centered at (290.9860,80.0160) with a radius of 3.000 arc min
This is 0.379 arc min from the center of the uvot region
The area of the BAT error circle is 28.27 sq. arc min
The UVOT/BAT overlap is 28.27 sq. arc min or 1.00 of the BAT error circle
The XRT error circle is centered at (291.0071,80.0095) with a radius of 0.035 arc min
This is 0.471 arc min from the center of the uvot region
The area of the XRT error circle is 0.004 sq. arc min
The UVOT/XRT overlap is 0.004 sq. arc min or 1.00 of the XRT error circle
srclist afterglow message for exposure 1 of trigger 1162001
find_uvot_ag.pl vrs. 2023-03-28 fem started at 230328d19h03m09s917969usUT
Observation start time is 2023-03-28T14:57:13.6
Examining file ./1162001_g144_uvot_catalog_srclist.fits
The exposure ID is 701708233
The exposure is 149.857 sec.
The bin size is 2 pixels
The filter is WHITE
There are 38 detected source(s) for 1162001_g144
Aspect correction adds 0.00314 degrees (0.754 sec of time = 1.96 arc sec) to RA
Aspect correction adds -0.00038 degrees (-1.38 arcsec) to Dec
Total aspect correction is 2.40 arcsec
*** WARNING -- access to usno-b1 catalog failed.
Star catalogs centered at 291.0374 , 80.0173 with radius 5.45 arc min.
n_usno: -1 n_gsc: 0
*** WARNING -- no star catalog entries found.
-- this strongly suggests a problem with the catalogs.
-- cannot check for bright stars or nearby sources.
-- there is a high risk of false positives.
Bright star catalog has no entries brighter than 12 mag
Mean distance difference (CAT_DELTA) for 36 matched entries is 0.679" for 1162001_g144
Mean and std. dev of mag. difference (MAG_DELTA) are 1.568 and 0.487 for 1162001_g144
Found 3 entries without IDs and 2 entries that are acceptable afterglow candidates for 1162001_g144.
Acceptable entries have no ID, XRT distances < 5.25", and are > 0.8*(80 - 10*(mag-6))" from any bright star
from any bright star and >21.6" from other rejected sources.
Magnitude criteria will be applied later.
BAT distances are from RA=290.9860 (19:23:56.64) DEC=80.0160 (+80:00:57.6)
XRT distances are from RA=291.0071 (19:24:01.71) DEC=80.0095 (+80:00:34.3)
-----------------
Entry 0 in the list of sources is a candidate afterglow for 1162001_g144 with 5x5 stamp
ra=291.00842 (19:24:02.02) dec=80.00978 (+80:00:35.2) +/- 1.1" mag=19.01+/-0.35
dist=1.2 REFID=23
src: 0 distr. of nearby unmatched sources: 0 0 1 0 0
Found 0 entries in star catalog(s) within 20.0" of the candidate.
printing all entries
(Entries within 2 arc sec of a source list entry are considered a match)
##### This source remains a candidate #####
It has no entries within 4" or brighter than 13 mag
-----------------
Entry 14 in the list of sources is a candidate afterglow for 1162001_g144 with 5x5 stamp
ra=290.79524 (19:23:10.86) dec=80.05450 (+80:03:16.2) +/- 1.1" mag=19.93+/-0.35
dist=208.7 REFID=33
*** The position of this source is inconsistent with the XRT position.
The position is 182.6 arc sec from the BAT position.
src: 14 distr. of nearby unmatched sources: 1 0 0 0 0
Found 0 entries in star catalog(s) within 20.0" of the candidate.
*** If XRT position is correct, then this is NOT the afterglow
Found 0 entries in star catalog(s) within 10" of the XRT position.
List UVOT sources within 10" of the XRT position:
Unmatched source ra=291.00842 (19:24:02.02) dec=80.00978 (+80:00:35.2) +/- 1.1" mag=19.01+/-0.35 dist=1.2 REFID=23
Good candidates have no ID, acceptable profiles,
mag between 9.01 and 19.22, XRT distances < 5.25",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 1 good candidate(s) found.
srclist paragraph message for exposure 1 of trigger 1162001
SRCLIST PROBLEM: access to all star catalogs failed
------ Start for Possible Stand-alone Circular ----
In response to GRB230328 (Swift/BAT trigger 1162001) at 14:54:48 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 114 seconds after the BAT trigger. There is a candidate afterglow in
the rapidly available 2.7'x2.7' sub-image at
RA(J2000) = 19:24:01.84 = 291.00765
DEC(J2000) = +80:00:34.5 = 80.00959
with a 90%-confidence error radius of about 0.62 arc sec. This position is 0.4
arc sec. from the center of the XRT error circle. The estimated magnitude is
18.22 with a 1-sigma error of about 0.15. No correction has been made for the
expected extinction corresponding to E(B-V) of 0.070.
------- notes for trigger 1162001 ------
uvot_gcn_auto.pl vrs. 2023-03-28 fem at 230328d19h03m13s097612usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1162001
-expid=701708233 -meonly -msg_srclist
Results from standard processing of UVOT TDRSS data for this trigger should be
available at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/1162001/
Links to data for all triggers can be found at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/
XRT position found for srclist. XRT position found for Genie image. BAT
position found.
UVOT exposure began at MET 701708233.6425 or about 2023:087:14:57:08 UT
Access to USNO star catalog FAILED. This increases the odds of a FALSE
afterglow detection. There was likely a PROBLEM with the srclist star catalog
because no stars found. Found 38 sources in srclist catalog. Found 3 srclist
source(s) without IDs. There are 1 good candidate(s) in the srclist catalog.
Good candidates must be brighter than 19.22 mag. Failure of star catalog access
makes the srclist candidate(s) UNRELIABLE.
Access to USNO star catalog FAILED. This increases the odds of a FALSE
afterglow detection. Found 8 source(s) in Genie image catalog. 1 source(s) are
within 10.0" of the xrt position. Found 2 Genie image source(s) without IDs.
There are 1 good candidate(s) in the Genie image catalog. Good candidates must
be brighter than 20.88 mag. Found 0 stars in largest star catalog for Genie
image region. The stars will eliminate afterglows from about 0% of the Genie
image region.
All AG candidates sorted by magnitude for the current finding chart.
(U/V/White SRCLIST mags < 17.5/17.5/18.5 are reliable. Mag > 18.5/18.5/19.5 are
not. Others are uncertain.)
(U/V/White Genie image mags < 18.0/18.0/19.0 are reliable. Mag > 19.0/19.0/20.0
are not. Others are uncertain.)
(Magnitudes followed by * have been corrected for exposure.)
---MET--- -dt- filter ---RA-- ---DEC--- -MAG/Limit Dist(") Source Asp.Corr?
701708233 113 WHITE 291.00842 80.00978 19.01/19.2 1.2 srclist Yes
701708233 113 WHITE 291.00765 80.00959 18.22/20.9 0.4 image Yes
List afterglow candidates for other finding charts.
701708445 325 U srclist found no candidates.
701708445 325 U 291.00803 80.00956 19.32/20.4 1.5 image Yes
701708976 856 ? srclist data are not available.
701708976 856 WHITE image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: white
GRB_DEC: 80.00959
GRB_ERROR: 0.62
GRB_RA: 291.00765
IMAGE_START_TIME: 14:57:08
MAGNITUDE: 18.22
MAG_ERROR: 0.15
MESSAGE_TYPE: ACK
SOURCE: XRT